According to a report on SI.com authored by Selena Roberts and David Epstein, Alex Rodriguez, the man best positioned to overtake Barry Bonds' home run record and the game's most impressive offensive specimen, allegedly tested positive for testosterone and the anabolic steroid Primobolan in 2003. This after he denied early, often and publicly that he had ever used any performance-enhancing drugs, and long after he had been held aloft as the man who could save baseball from its decadeslong reputation as a glorified needle exchange program.

But others are still focused on cleaning up the dugouts, such as Dr. Don Catlin, who was instrumental in uncovering the BALCO scandal - the one that ensnared more than a dozen top athletes, including Barry Bonds and Marion Jones.

Shift the burden of proof?

As good as he is at it though, Catlin is tiring of trying to find every last performance-enhancing drug – and every last athlete using one. As he explained in a Monitor profile last summer, he is working on a new paradigm in which athletes would be responsible for proving their innocence - rather than scientists and officials being responsible for proving their guilt.

So if you're tired of reading about the latest doping allegation, click here for a fresh view on how to preserve sport's integrity.